## Sunday, May 11, 2014

### Scientific Keyboard Challenge, Revisited

On this post:

http://edspi31415.blogspot.com/2014/05/scientific-calculator-keyboard-challenge.html,

I have issued a creativity challenge: design a scientific calculator using only 25 keys.  No restrictions.  I came up with a couple ideas.

Before I present mine, I want to show a great landscape design by Picky Bart.  Thanks for posting PickyBart!:

http://pickyb.blogspot.co.uk/2014/05/proposed-scientific-rpn-hp-quickcalc.html

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The first one is an RPN keystroke programmable calculator:

The next one is a graphing calculator. (or at least an attempt at one).  Since only 25 keys are allowed, this prevents the use of an ALPHA key.  So, soft keyboards via dialogue had to be implemented instead.

 Modes: RPN/Linear/Math IO DEG/RAD/GRAD FUNC/POLAR/PARAM/SEQN a+bi, r< , >, >=; <, <=, and, or IFTE:  If, Then, Else, EndIf Loop:  For, Step, Next; Repeat, Until, While, Wend Ctrl:  Pause, Stop, Error, Subr String:  length, sub, left, right; >expr, >string, position, augment Math: Frac:  PDQ, a b/c, exact, approx Hyp:  (hyperbolic) Prob: x!, nCr, nPr, gamma; rand, randint, randnorm, dice Cmplx: abs, arg, real, imag; >Polar, >Rect Parts: IP, FP, round Calc:  derivative, integral, S, P Constants: (24) Conversions: (12 pairs) Base: Mark: b, o, h, d HEX: A, B, C, D; E, F Logic: and, or, not, xor; xnor, shift right, shift left, 2's Utility: RPN: swap, roll down, roll up, drop; over, pick, view, dupn Solver: New, Edit, Delete, Solve ALPHA: - enter message and press enter CAPS (Keyboard), lower (keyboard), Symb (! @ # \$ % ^ & * ( ) { } and math symbols), Greek  I may have forgot something but I think I got all the basics covered.
This post is property of Edward Shore  - 2014

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1. how come yours looks so much better than mine? LOL! Great work.

1. Turns out doing the design using Excel and Word does wonders. I'm not too good at hand drawings. LOL

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